/**
 * Created with IntelliJ IDEA.
 * User: 花海
 * Date: 2022-08-12
 * Time: 22:08
 */
public class main1 {
    public static void main(String[] args) {
        String s1="abc"+"def";//1
        System.out.println(s1);

        String s2=new String(s1);//2
        if(s1.equals(s2))//3
            System.out.println(".equals succeeded");//4
        if(s1==s2)//5
            System.out.println("==succeeded");//6
    }


}
